baber/WOPTO huggingface dataset:
Patent GB-1493616-A (GB)
Title: Signal recording and reproducing apparatus
IPC: H04N5/782
Filed: 1974-12-04
Abstract: 1493616 Recording and playback circuits SONY CORP 4 Dec 1974 [8 Dec 1973] 52449/74 Heading G5R Each of a plurality of transducer heads 3a, 3b connected to respective recording circuits 116, 127, 216, 227 records timewise spaced apart portions only of the input signal thereto, each said portion overlapping in time at the beginning and end thereof with portions recorded by the other head or other ones of the heads, the heads 3a, 3b also replaying the recorded portions via respective playback circuits 125, 225 from which a circuit 128 forms a composite output signal, and in order that the level of the composite output signal is not increased in the overlap periods, each recorded signal portion is phase shifted by 120 degrees, either during recording or during playback, relative to the signal portions recorded by the or another said head. The invention is applicable to recording and playback of variable depth grooves, electrooptical recording and playback with variable reflectivity or transmission, variable capacitance recording, and magnetic recording. In apparatus, such as that disclosed in Application No 37430/74, wherein a first magnetic sheet (6), Fig. 1 (not shown), is wrapped around a rotor (2) carrying video heads (1a), (1b) and a second magnetic sheet (7) is wrapped for a little over 180 degrees around a rotor (4) carrying audio heads 3a, 3b so that both heads 3a, 3b scan sheet (7) for short periods, the audio playback signal during such periods would, for a constant recorded level, have twice the amplitude of the playback signal between such periods. However, by passing the record signal to heads 3a, 3b through circuits 127, 227 respectively giving phase shifts of # and # + 120 degrees respectively, the playback signal in the overlap periods has the same amplitude as in the intervening periods but is phase shifted relative thereto. The phase shift circuits 127, 227 may alternatively be located in the playback channels. A three or four head apparatus may be provided with a respective phase shift circuit for each head, the circuits for the three head apparatus giving phase shifts of #, # + 120 degrees and #+240 degrees, and those of the four head apparatus giving phase shifts of #, # + 120 degrees, # and # + 120 degrees, Figs. 7, 8 (not shown).
Patent GB-1285984-A (GB)
Title: Method for preparing tantalum film resistors
Inventor: PARISI GEORGE IGNATIUS
IPC: C23C14/00
Filed: 1969-10-27
Abstract: 1285984 Reactive sputtering of tantalum WESTERN ELECTRIC CO Inc 27 Oct 1969 [28 Oct 1968] 52466/69 Heading C7F [Also in Division H1] A Ta based resistor is formed by sputtering Ta on to a substrate e.g. glass or glazed ceramic in an O 2  partial pressure of 1-11 x 10<SP>-4</SP> and a N 2  partial pressureof 5-7 x 10<SP>-4</SP>, anodizing the deposit and stabilizing by heating e.g. at 200- 300‹C. for 1-5 hours. O 2  and N 2  are introduced into the evacuated sputtering chamber and argon is introduced to 20 microns pressure. The film 400-2000 Š thick is anodized at 100 volts in 0.01% aqueous citric acid and stabilized at 250‹C. for 5 hours.
Patent GB-1202485-A (GB)
Title: Hydrocyanation of olefins
IPC: B01J31/16
Filed: 1968-11-06
Abstract: 1,202,485. Hydrocyanation of olefins. E.I. DU PONT DE NEMOURS & CO. 6 Nov., 1968 [6 Nov., 1967], No. 52562/68. Heading C2C. Ethylenically unsaturated organic compounds containing 2-20 carbon atoms are hydrocyanated by reaction with hydrogen cyanide in the presence of a catalyst, of the formula wherein Z is OR or R, R is an alkyl or aryl radical having up to 18 carbon atoms, M is P, As or Sb, M<SP>11</SP> is Mo or W and n is an integer of 1-4. The reaction may be effected at a temperature of - 25 to + 200 C. in an inert solvent employing a molar ratio of starting material to catalyst of from 10: 1 to 2000: 1 and a catalyst promoter may also be present. Suitable starting materials include 4-pentene nitriles obtained by the isomerization of 3-pentene nitriles in the presence of catalysts of the above type wherein M<SP>11</SP> may also be Cr. Specified olefinically unsaturated compounds which may be hydro - cyanated are ethylene, propylene, butene-1, pentene-2 and hexene-2 and substituted compounds such as styrene, α-methylstyrene. 3- pentene nitrile, 4-pentene nitrile and 2-methyl- 3-butene nitrile.
Patent GB-1292287-A (GB)
Title: Failure indicating arrangement for gyroscopes
IPC: G01C19/32
Filed: 1969-10-28
Abstract: 1292287 Gyroscopic apparatus AGA AB 28 Oct 1969 [22 Nov 1968] 52716/69 Heading G1C [Also in Division H2] A failure indicator for a gyro motor 1 connected to a three-phase supply R, S, T, comprises an induction type servomotor 2 having a pair of stator windings 3, 4 connected each in series with a capacitor 5, 6 between a common phase T and a respective one of the remaining phases R, S of the supply. The rotor of the motor 2 is connected by a pinion 7 and rack 8 to an indicator vane 12. Normally the motor 2 drives the rack 8 against the bias of a spring 9 to a stop 14 so that the vane 12 is not visible. Should a phase fail when the motor 1 is running, the motor 1 will continue to run without perceptible change of speed and the voltage induced in the failed phase enables the servomotor 2 to produce sufficient torque to prevent any indication being given by the vane 12. If any attempt is made to start the gyro motor 1 when a phase has failed, it will not start and the servomotor 2 will produce no torque, so that the vane 12 remains visible. The vane 12 will also remain visible if the phase rotation is incorrect.
Patent GB-1507973-A (GB)
Title: Knitted fabric
IPC: D04B1/16
Filed: 1974-05-15
Abstract: 1507973 Knitted fabric F N CHELL 15 May 1975 {15 May 1974] 53059/73 Heading D1K Double jersey fabric is knitted as a ground fabric from a partly or wholly synthetic yarn and a second yarn e.g. textured the whole being heat finished e.g. by scouring, dyeing and/or stentor heating so that the first yarn shrinks differently from the second to hold the loops of the latter firmly so that it covers the base fabric to produce or enhance a twill, hop sack or pebbled appearance. The second yarn may be between twice and ten times the weight of the first e.g. between 110 and 600 dtex and less than 110 dtex respectively.
Patent GB-1279812-A (GB)
Title: Manufacture of poromeric materials
Inventor: KRAUCH C H
IPC: C08J9/28
Filed: 1969-10-31
Abstract: 1279,812 Poromeric materials BADISCHE ANILIN- & SODA-FABRIK AG 31 Oct 1969 [2 Nov 1968] 53472/69 Heading C3P [Also in Division D1] Poromeric materials are prepared by impregnating a web of fibrous material with an aqueous liquid containing (A) a polyolefinically unsaturated monomer polymerizable with a redox catalyst, (B) a polyolefinically unsaturated monomer and a mono-olefinically unsaturated monomer both polymerizable with a redox catalyst, (c) a monomer as in (A) and a high polymeric plastics material dispersible or soluble in water, (D) monomers as in (B) and a plastics material as in (C), or (E) a mono-olefinically unsaturated monomer polymerizable with a redox catalyst and a plastics material as in (c), in dissolved, emulsified or dispersed form; cooling the impregnated web of fibrous material to a temperature at which the said liquid undergoes at least partial solidification; polymerizing the unsaturated monomer or monomers using a redox catalyst, at least one component of which is not added until after the said liquid has undergone complete or partial crystalline solidification; and thawing out and removing the water and any residual unsaturated monomer from the resulting poromeric material. Mono-olefinically unsaturated monomers which may be used include (meth)acrylate esters, (meth)acrylamide and N-methylol and N- methylol ether derivatives, (meth)acrylic acid, vinyl esters, vinyl ethers and thioethers, N-vinyl caprolactam, N-vinyl ethyl carbamate, vinyl or vinylidene chloride, styrene, vinyltoluene and monomers containing chromophoric groups. Suitable polyolefinically unsaturated monomers include (meth)acrylate esters of diols, divinyl and diallyl esters of dicarboxylic acids (saturated or unsaturated), vinyl and allyl esters of unsaturated monocarboxylic acids, bis-(meth)- acrylamides, poly-unsaturated derivatives of melamine, dicyanodiamine, urea or guanidine, diallylamine, divinyl heterocyclic compounds, and unsaturated polyesters. Specified polymeric materials are homopolymers and copolymers of mono- and di-olefinically unsaturated compounds, polyesters, polyurethanes, polyamides, polyvinyl alcohols, polyalkylene oxides, polyacetals, polyimines and cellulose esters or ethers. Preferred redox catalyst systems are combinations of ammonium or alkali metal persulphates or hydrogen peroxide with iron (II) or copper (I) salts; various other oxidizing and reducing components are also listed. The web of fibrous material is suitably a fabric composed of wool, cellulosic, cellulose acetate, viscose, polypropylene, polyamide, polyacrylonitrile and/or polyethylene terephthalate fibres. Monomer conversion in the polymerization step is usually from 20-90%. The poromeric products obtained are suitable as floor coverings, thermal insulating materials, leather substitutes and coating materials.
Patent GB-1067629-A (GB)
Title: Dryer with open end drum
IPC: D06F58/04
Filed: 1965-12-16
Abstract: 1,067,629. Tumbler driers. WHIRLPOOL CORPORATION. Dec. 16,1965 [Jan. 13, 1965], No. 53513/65. Heading F4G. A tumbler drier comprises a cabinet 11 housing a horizontally mounted imperforate or perforate cylindrical drum 24 which has an end wall only at the front loading end of the drum concentric with a loading opening 23 in the cabinet panel 14, while the open rear of the drum is confronted by a stationary bulkhead 33 in the cabinet. The wall of the drum has a continuous V-shaped groove 28 formed therein in which engage a series of rollers 30 mounted on shafts 32 secured to the bulkhead to rotatably support the drum and to prevent axial movement thereof. The drum is rotated by a continuous belt 36 wrapped around the peripheral wall 26 of the drum and driven by a motor 38. Heated air is introduced into the interior of the drum from a duct through an aperture in the bulkhead and is withdrawn therefrom by a further aperture therein communicating via conduits 47, 48 with a blower 50 to atmosphere. The bulkhead has an annularly shaped embossment substantially concentric with the cylindrical wall of the drum, which embossment is engaged by flexible sealing means in two separate positions. A filter 83 may be inserted in discharge conduit 46 through a door 82 in the top panel of the cabinet.
Patent GB-1164590-A (GB)
Title: Method for producing Viscose Pulp having good Filterability and Low Tendency of Clogging the Spinning Nozzles
IPC: D21C9/08
Filed: 1968-11-12
Abstract: 1,164,590. Bleaching pulp. BILLERUDS A.B. 12 Nov., 1968 {30 Nov., 1967], No. 53583/68. Heading D1P. Unbleached wood pulp for use in the production of rayon pulp is bleached by subjecting the pulp to an incomplete bleaching with elementary chlorine to leave a residue of lignin in the pulp and removing the residual lignin by bleaching the pulp with chlorine dioxide or a hypochlorite, e.g. sodium or calcium hypochlorite. The incomplete bleaching with chlorine preferably leaves a residual content of lignin in the pulp of 0.1-0.2% by weight. The chlorine may be added to the pulp in the exact quantity required for delignifying the pulp while leaving 0.1-0.2% by weight of lignin in the pulp or the chlorine may be added in a quantity higher than that required for complete delignification and the excess chlorine removed, e.g. by washing the pulp with water and/or adding an alkali to the pulp, while there is still a small quantity of lignin present in the pulp. If chlorine dioxide is the secondary bleaching agent this can be added to the pulp together with the elementary chlorine, the ligrain being mainly attacked by the chlorine and when all the chlorine has been consumed the residual lignin being attacked by the chlorine dioxide, but if a hypochlorite is used as the secondary bleaching agent this must be applied after the treatment with elementary chlorine. The natural resin in the bleached pulp may be chlorinated to less than 12% by weight, defined as the percentage of chlorine of the solid resinous material soluble in ethanol. Suitable bleaching apparatus comprises a first bleaching tower 1, alkalization tower 3 and second and third bleaching towers 5 and 7, washers 2, 4, 6 and 8 being supplied after each tower and water supplied to the washers through tubes 9 being withdrawn through tubes 10. Unbleached pulp is supplied to tower 1 through tube 11 and bleached pulp withdrawn through tube 12. For controlling the processes in the towers samples can be taken through tubes 17, 18, 19 and 20. Chlorine, or chlorine and chlorine dioxide, is supplied to tower 1 through tube 13, sodium hydroxide is supplied to tower 3 through tube 14, hypochlorite is supplied to tower 5 through tube 15 and hypochlorite or chlorine dioxide is supplied to tower 7 through tube 16. The temperature in tower 3 may be 40‹-100‹C and in towers 5 and 7 40‹-60‹C. If it is not desired to wash the pulp between towers 5 and 7 the washer 6 may be shunted by tube 21.
Patent GB-1361686-A (GB)
Title: Electrical drive system for a sewing machine
IPC: D05B69/26
Filed: 1971-11-19
Abstract: 1361686 Control of D.C. motors CUTTERS MACHINE CO Inc 19 Nov 1971 [20 Jan 1971] 53738/71 Heading H2J [Also in Division D1] An electric drive system for a sewing machine comprises an electric drive motor, a speed control circuit for operating the motor at a predetermined low speed, operator controlled means for varying the speed of the motor above the low speed, a dynamic braking circuit across the electric motor, a logic circuit connected to the speed control circuit, a connection for feeding a signal corresponding to the back E.M.F. from the dynamic braking circuit to the logic circuit, means in the logic circuit for de-energizing the speed control circuit and for energizing the dynamic braking circuit to reduce the speed of the motor to said low speed, a needle position switch in the logic circuit, brake switch means in the logic circuit connected to the dynamic braking circuit and means responsive to the closing of the needle position switch for actuating the brake switch to stop the motor only at said low speed. When the machine treadle is depressed the logic circuit 141 is de-energized and the dynamic braking circuit 140 is also deenergized, the clamping circuit 168 is opened and the motor speed control circuit 139 comes into operation by means of the foot feed potentiometer 146. When the treadle is subsequently released the logic circuit 141 is re-energized and the back E.M.F. of the decelerating motor 112 is fed to a sensing transistor 186 but an S.C.R. 187 remains off until that E.M.F. reaches a value corresponding to the needle positioning low speed and transistors 166, 167 are energized, thus closing the damping circuit 168 and deenergizing the motor speed control and motor 112. At this time the dynamic braking circuit still operates. When the low speed is reached transistor 186 turns on SCR 187 and the clamping circuit is opened and the speed control reenergized at the low speed until the next time a down reed switch 134 is closed by a magnet 136 rotating on the needle drive-shaft. A Zener diode 160 at this point receives a pulse above its threshold value and the motor 112 is de-energized by a clamping circuit 168 and the dynamic braking circuit is energized. A filter circuit produces a slight delay so that the dynamic braking circuit remains energized after the motor stops and then the dynamic braking circuit itself is de-energized. A knee-operated switch 128 allows the needle to be stopped in its up position by causing the up reed switch 133 to be actuated by the magnet 136.
Patent GB-1235525-A (GB)
Title: Window
Inventor: CARLSSON CARL INGVAR
IPC: B60J1/00
Filed: 1968-11-13
Abstract: 1,235,525. Caravan windows; double glaze units. BOFORS-TIDAHOLMSVERKEN A.B. 13 Nov., 1968 [13 Nov., 1967], No. 53913/68. Headings E1J and E1R. A caravan window aluminium sash pivotable about a horizontal axis at the top of the sash has an upper rail 1 comprising a hinge part 3 which cooperates with a frame member 5 of the main frame for hinging function, and an integral portion of U-shaped cross-section which is adapted for reception of a window pane 2, e.g. a double glaze unit as shown. One leg 7 of the channel is shorter than the other leg 6 and has an inwardly turned flange 7a and the web 4 of the channel has a groove 8 of rectangular section extending along the entire length of the rail and adjacent the longer leg 6 and is adapted to receive the marginal portion of acrylic sheet 2a while the flange 7a is received into a groove 10 in the second acrylic sheet 2b which is dished as shown, and secured by adhesive to sheet 2a to form a double glaze unit, the edge of this sheet 2b resting on the surface of the web 4 and the edge of the sheet 2a being spaced from the bottom of the groove 9 to allow for expansion of the sheet.
Patent GB-1473406-A (GB)
Title: Starter slide and blade assembly for a thread rolling machine
IPC: B21H9/02
Filed: 1974-12-16
Abstract: 1473406 Thread rolling machines HARTFORD SPECIAL MACHINERY CO 16 Dec 1974 [14 Dec 1973] 54193/74 Heading B3M A starter mechanism for feeding blanks 15 from a work shoot 14 to a pair of thread rolling dies 16, 18 includes a starter blade 36 which is mounted on a slide 62 for reciprocation towards and away from the working gap between the dies, the blade being moved away from the gap by an oscillating drive lever 48 and towards gap by an adjustable spring 114 within a slide housing 108. The drive lever is biased by a spring 66 and is moved by a further lever 46 pivoted at 80 and oscillated by the action of a cam follower 54 on a cam 38. The cam is carried on the driving crank 40 for the reciprocable rolling die 18. The connection between the drive lever 48 and lever 46 is by way of a pivot pin 78 located between respective arms of the levers. By adjusting the position of the pin along arm 64 of the drive lever, the stroke of the lever (and hence of the starter blade) can be changed. The pivot point 80 for the lever 46 can be adjusted in position by an assembly 84. The rolling machine can process blanks with finished diameters of between 0À06 and 0À16 inch at speeds of up to 750 per minute.
Patent GB-542798-A (GB)
Abstract: 542,798. R÷ntgen-ray apparatus. GENERAL ELECTRIC CO., Ltd., and CALDWELL, J. T. April 19, 1940, No. 7095. [Class 98 (i)] An X-ray tube and fluorescent screen are individually pivoted to a single counterbalanced carriage adjustable on a vertical column, means being provided for locating the tube and the screen in predetermined positions. As shown, the tube 6 and screen 7 are mounted on a carriage 5 vertically adjustable on a standard 1 movable on upper and lower tracks 4, 3, the movement being normally limited by fingers 9 pivoted to the base 2 and engaging stops 8. The fingers may be raised by push-rods 11 so as not to engage the stops, to allow the base 2 to be moved to the extreme end of the tracks. The tube 6 is mounted on a carriage 12 slidable on two parallel rods 13 connected by end members 14, a spindle 14a extending centrally from the rear member being rotatably mounted in a boss 15, Fig. 4, projecting from the carriage 5 so that the tube may be set as in Fig. 2 or Fig. 3 to give a horizontallydirected or vertically-directed beam respectively. The tube is held in three positions by a key 33 on the rear member 14 which is held in engagement with one of a pair of cross-slots in the face of the boss- 15 by a spring 35 which draws the spindle 14a rearwardly. The fluorescent screen 7 is movable on parallel rods 17 carried by a member 18 pivotal about two axes at right angles to one another on the end of an arm 19 pivotally mounted on a lug 21 on the carriage 5. When the tube is in the position shown in Fig. 3 the arm 19 is turned through 180 degrees to bring the screen vertically above it, the two positions of the arm being determined by a stop 24. A counterweight in the standard 1 for balancing the carriage 5 and the parts carried by it is attached to a cable (not shown) passing over a pulley at the top of the standard, downwardly and round a second pulley on the carriage, and thence upwardly to an arm 25 fast on the spindle of the arm 19 ; the counterweight thus also counterbalances the screen during its movement. The screen may be prevented from sliding on the rods 17 during this movement by a spring-pressed locking plunger 27. When not required, it may be folded back as shown in Fig. 3. The tube is moved by a hollow arm 29 through which extend connections from diaphragm controls 30 at the end of the arm. In a modification, a sprocket on the spindle of the screen arm 19 is connected by a chain to a sprocket of twice its diameter on the spindle 14a, so that movement of the screen arm simultaneously adjust the tube.
Patent GB-1330887-A (GB)
Title: N-phenyl-2-aminoimidazolines
IPC: C07D233/50
Filed: 1970-11-16
Abstract: 1330887 Substituted N-phenylaminoimidazoline-(2) BOEHRINGER INGELHEIM GmbH 16 Nov 1970 [17 Nov 1969] 54473/70 Heading C2C [Also in Division A5] Novel compounds of formula [wherein R 1 , R 2  and R 3 , which may be the same or different, each represents a hydrogen, fluorine, chlorine or bromine atom or an alkyl, alkoxy, trifluoromethyl or cyano group and R 4  and R 5 , which must be different from one another, each represents a hydrogen atom or the group -(CH 2 ) n -A (wherein A represents a dialkylamino group with up to 4 carbon atoms in each of the alkyl groups or a morpholino, pyrrolidino or piperidino group) and n is 2 or 3] and acid addition salts thereof are prepared by one of the following methods:-(a) reaction of a compound of Formula II: with a compound of formula (b) reaction of a compound of Formula IV or V: wherein Y is amino, mercapto, alkoxy or alkylthio with ethylenediamine; (c) a compound of Formula VI: wherein X and Z are each halogen, alkoxy, alkylthio, amino or mercapto with a compound of formula HNCH 2 CH 2 NH(CH 2 ) n -A; or (d) chlorination or bromination of a compound of Formula I where one of R 1 , R 2  or R 3  is H, optionally followed by salt formation.  N - (p - bromophenyl) - N - (2 - morpholinoethyl) - 5 - methyl - isothiuronium hyriodide is prepared by reaction of methyl iodide and N-pbromophenyl - N - 2 - morpholino ethyl)-thiourea obtained by reaction of ammonium rhodanide and N - (p - bromophenyl - 2 - morpholinoethylamine) prepared by reaction of p-bromoaniline and N-(2-chloroethyl)-morpholine.
Patent GB-1121687-A (GB)
Title: A method of preparing elastic fibres having low extensibility
IPC: C08G18/10
Filed: 1965-12-20
Abstract: 1,121,687. Polyurethane filaments. KURASHIKI RAYON K.K. 20 Dec., 1965 [19 Dec., 1964], No. 54642/67. Divided out of 1,121,686. Heading B5B. Polyurethane fibres of low extensibility are obtained by spinning a solution of a polyurethane, which is the reaction product of a polyester having terminal OH groups and a M.W. of 200-8,000, a diiosocyanate and a glycol, in a solvent, and drawing the resulting filaments by an amount more than 50% while retaining more than 0.5 wt. per cent of solvent in the filaments. The solvent may be dimethylformamide, dimethylsulphoxide or tetrahydrofuran, and the solution may be dry spun, or wet spun, e.g. into water which may contain a proportion of the spinning solvent. The amount of drawing is suitably 50-500%, and more than 2% solvent is best retained while drawing. The elasticity of the filaments may be restored by a heat treatment, e.g. with water at 100 C. for 10 mins.